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Date: Thu, 06 Aug 2026 23:16:31 +0200
Message-Id: <DKI68ICIKGL5.2QX6KFG4QO96Q@kernel.org>
To: "Alexandre Courbot" <acourbot@nvidia.com>
From: "Danilo Krummrich" <dakr@kernel.org>
Subject: Re: [PATCH v2 2/3] rust: dma: rename dma_handle to dma_address
Cc: "Alice Ryhl" <aliceryhl@google.com>, "David Airlie" <airlied@gmail.com>,
 "Simona Vetter" <simona@ffwll.ch>, "Abdiel Janulgue"
 <abdiel.janulgue@gmail.com>, "Daniel Almeida"
 <daniel.almeida@collabora.com>, "Robin Murphy" <robin.murphy@arm.com>,
 "Andreas Hindborg" <a.hindborg@kernel.org>, "Miguel Ojeda"
 <ojeda@kernel.org>, "Boqun Feng" <boqun@kernel.org>, "Gary Guo"
 <gary@garyguo.net>, =?utf-8?q?Bj=C3=B6rn_Roy_Baron?=
 <bjorn3_gh@protonmail.com>, "Benno Lossin" <lossin@kernel.org>, "Trevor
 Gross" <tmgross@umich.edu>, "Tamir Duberstein" <tamird@kernel.org>,
 =?utf-8?q?Onur_=C3=96zkan?= <work@onurozkan.dev>, "John Hubbard"
 <jhubbard@nvidia.com>, "Alistair Popple" <apopple@nvidia.com>, "Timur Tabi"
 <ttabi@nvidia.com>, "Eliot Courtney" <ecourtney@nvidia.com>, "Zhi Wang"
 <zhiw@nvidia.com>, <nova-gpu@lists.linux.dev>,
 <dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
 <driver-core@lists.linux.dev>, <rust-for-linux@vger.kernel.org>
References: <20260805-falcon-dma-projections-v2-0-4cc9f3f13ee9@nvidia.com>
 <20260805-falcon-dma-projections-v2-2-4cc9f3f13ee9@nvidia.com>
In-Reply-To: <20260805-falcon-dma-projections-v2-2-4cc9f3f13ee9@nvidia.com>

On Wed Aug 5, 2026 at 7:01 AM CEST, Alexandre Courbot wrote:
>  pub struct Coherent<T: KnownSize + ?Sized> {
>      dev: ARef<device::Device>,
> -    dma_handle: DmaAddress,
> +    dma_addr: DmaAddress,
>      cpu_addr: NonNull<T>,
>      dma_attrs: Attrs,
>  }

>From the perspective of the DMA API the value actually serves as a handle f=
or
the C API, so we could have also renamed the accessor only. But I think it =
is
fine either way.